ASTROSAT CZTI

Data Quality Report

Orbit 55054

Creation date: 2025-12-01T16:11:46.690128
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_025T01_9000006530_55054cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55054cztM0_level2_quad_clean.evt
Size (bytes)2,053,396,800380,252,160
Size1.9 GB 362.6 MB
Events in quadrant A13,123,4342,581,375
Events in quadrant B14,970,1522,757,045
Events in quadrant C13,397,1472,456,095
Events in quadrant D32,470,8401,895,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0589745
B0634127
C0594985
D01151035

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05420
B05420
C05420
D05420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A265014421.667862%
B265009643.637736%
C265015422.045206%
D26501576721.761443%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 31841 26506 311 311 0.98% 1.17%
B 31841 26506 522 522 1.64% 1.97%
C 31841 26506 421 421 1.32% 1.59%
D 31841 26506 5069 5069 15.92% 19.12%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 8 1568778 2244.27 2872 2808 697.8
A 0 250 88409 122.68 2872 2808 697.8
A 5 241 61823 84.58 2872 2808 697.8
B 4 81 3037302 5049.53 2820 2710 601.0
B 5 185 580507 961.45 2820 2710 601.0
B 12 111 73603 117.96 2820 2710 601.0
C 12 250 906451 1185.41 2784 2758 762.3
C 13 3 601012 784.76 2784 2758 762.3
C 12 252 216744 280.69 2784 2758 762.3
D 11 129 16022445 22345.57 2528 2417 716.9
D 15 94 1304637 1816.4 2528 2417 716.9
D 11 176 1205051 1677.5 2528 2417 716.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter